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Journals and Conferences
In a high resistance comparison among KRISS, VNIIM and NIM, the relative resistance values of measurement results agreed well within 2 ppm in 10 megohm and 5 ppm in 1 gigohm. Also, relative combined standard uncertainties of the three institutes is 4.9 ppm in 10 megohm and 11.6 ppm in 1 gigohm.
1:1 ratio of a divider's resistance up to 100 k/spl Omega/ at 100 V and 10:1 voltage ratio up to 1 kV can be accurately measured by a potentiometric method. Common-mode potential effect on voltmeter offset is removed by reversing whole divider for high voltage measurement. The best relative measurement uncertainty (k=1) was estimated to be less than… (More)